220122001 has 16 divisors (see below), whose sum is σ = 258068160. Its totient is φ = 185518080.

The previous prime is 220121999. The next prime is 220122017. The reversal of 220122001 is 100221022.

It is not a de Polignac number, because 220122001 - 2¹ = 220121999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220122061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3745 + ... + 21313.

It is an arithmetic number, because the mean of its divisors is an integer number (16129260).

Almost surely, 2^220122001 is an apocalyptic number.

It is an amenable number.

220122001 is a deficient number, since it is larger than the sum of its proper divisors (37946159).

220122001 is a wasteful number, since it uses less digits than its factorization.

220122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17664.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 220122001 is about 14836.5090570525. The cubic root of 220122001 is about 603.7926435051.

Adding to 220122001 its reverse (100221022), we get a palindrome (320343023).

It can be divided in two parts, 220 and 122001, that added together give a palindrome (122221).

The spelling of 220122001 in words is "two hundred twenty million, one hundred twenty-two thousand, one".